code: def test_matrix_arith():
      check(
          "self.Whz@h + Uxz@x + bz",
          """
            BinaryOp(op=<PLUS:+,19:20>,
                     lhs=BinaryOp(op=<PLUS:+,11:12>,
                                  lhs=BinaryOp(op=<AT:@,8:9>,lhs=Member(op=<DOT:.,4:5>,obj=self,member=Whz),rhs=h),
                                  rhs=BinaryOp(op=<AT:@,16:17>,lhs=Uxz,rhs=x)),
                     rhs=bz)
            """,
      )
  
imports: from tsensor.parsing import *
  import re
label_desc: Use image node_id 26 for calling a global function with example usage: test_matrix_arith() without return types